package top.ywlog.permission.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * @author: Durian
 * @date: 2020/10/25 1:33
 * @description: 跨域配置类
 */
@Configuration
public class CorsConfig
{
    private CorsConfiguration buildConfig()
    {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.addAllowedHeader("*"); // 2允许任何头
        corsConfiguration.addAllowedMethod("*"); // 3允许任何方法（post、get等）
        corsConfiguration.setAllowCredentials(true);//支持安全证书。跨域携带cookie需要配置这个
        corsConfiguration.setMaxAge(3600L);//预检请求的有效期，单位为秒。设置maxage，可以避免每次都发出预检请求
        return corsConfiguration;
    }

    @Bean
    public CorsFilter corsFilter()
    {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }
}
